{"id":"CVE-2012-5573","url":"https://www.cyber-defence.io/tools/cve/CVE-2012-5573","generatedAt":"2026-10-27T19:45:22.841Z","title":"The connection_edge_process_relay_cell function in or/relay.c in Tor before 0.2.3.25 maintains circuits even if an unexpected SENDME cell arrives, which might allow remote attackers to cause a denial of service (memory consumption or excessive cell…","description":"The connection_edge_process_relay_cell function in or/relay.c in Tor before 0.2.3.25 maintains circuits even if an unexpected SENDME cell arrives, which might allow remote attackers to cause a denial of service (memory consumption or excessive cell reception rate) or bypass intended flow-control restrictions via a RELAY_COMMAND_SENDME command.","published":"2013-01-01T12:35:15.000Z","lastModified":"2026-06-16T23:47:02.000Z","status":"Modified","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"2.0","score":5,"severity":"MEDIUM","vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P"},"cwe":["CWE-399"],"affected":["torproject/tor"],"epss":{"score":0.03146,"percentile":0.87841,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (3.15%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://openwall.com/lists/oss-security/2012/11/26/11","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/51329","source":"secalert@redhat.com"},{"url":"http://security.gentoo.org/glsa/glsa-201301-03.xml","source":"secalert@redhat.com"},{"url":"https://bugs.gentoo.org/show_bug.cgi?id=444804","source":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=880310","source":"secalert@redhat.com"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/80289","source":"secalert@redhat.com"},{"url":"https://gitweb.torproject.org/arma/tor.git/commitdiff/b9b54568c0bb64c32bd0b362954bdbc8c1234b16","tags":["Patch"],"source":"secalert@redhat.com"},{"url":"https://gitweb.torproject.org/tor.git/blob/release-0.2.3:/ReleaseNotes","source":"secalert@redhat.com"},{"url":"https://trac.torproject.org/projects/tor/ticket/6252","tags":["Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"http://openwall.com/lists/oss-security/2012/11/26/11","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/51329","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://security.gentoo.org/glsa/glsa-201301-03.xml","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugs.gentoo.org/show_bug.cgi?id=444804","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=880310","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/80289","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://gitweb.torproject.org/arma/tor.git/commitdiff/b9b54568c0bb64c32bd0b362954bdbc8c1234b16","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://gitweb.torproject.org/tor.git/blob/release-0.2.3:/ReleaseNotes","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://trac.torproject.org/projects/tor/ticket/6252","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2012-5573","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}